User:Pengo/ee

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Books + H/W:

  • Digital Fundamentals 9th Ed, Floyd (Digital fundy, wed)
  • Circuit Analysis: Theory And Practice & Circuit Analysis With Devices: Theory And Practice by Allan H. Robbins (Author), Wilhelm C. Miller (Author)
  • 5 fuses for multimeter

Todo:

Contents

[edit] Hardware

ICs 1:

  • SN74LS245N (Motorola) spec
  • SN74LS14N (TI) spec (next to above) IC 74HC14

ICs 2:

  • MM74HC02N (NOR) spec IC 74HC02
  • SN74HC00N (NAND) spec IC 74HC00
  • MC74HC86AN (XOR) spec IC 74HC86
  • MM74HC32 (OR) spec IC 74HC32
  • M74HC08B1R (AND) spec IC 74HC08

More:

  • L7805CV, 1.5A 5V Positive Voltage Regulator

[edit] Maths (Monday)

Some elementary algebra or arithmetic:

  • The following important properties of the square root functions are valid for all positive real numbers x and y:
\sqrt{xy} = \sqrt x \sqrt y \qquad \Rightarrow \qquad \sqrt{100\cdot y} \, = \, 10 \cdot \sqrt y
\sqrt{\frac{x}{y}} = \frac{\sqrt{x}}{\sqrt{y}} \qquad \Rightarrow \qquad \sqrt{\frac{x}{100}} = \frac{\sqrt{x}}{10}
\sqrt x = x^{1/2}

Identity:

\sqrt x - \sqrt y = \frac{x-y}{\sqrt x + \sqrt y},

When n, m, and n - m are positive (and if x is not equal to zero), one can see by counting the number of occurrences of x that

\frac{x^n}{x^m} = x^{n - m}.

Negative integer exponents:

a^{-1} = \frac{1}{a}
3^{-4} = \frac{1}{3^{4}}.

The most important identity satisfied by integer exponentiation is:

a^{m + n} = a^m \cdot a^n

This identity has the following consequences:

\begin{align} a^{m - n}& = \begin{matrix}\frac{a^m}{a^n}\end{matrix};\\ (a^m)^n& = a^{mn};\\ a^\frac{m}{n}& = \sqrt[n]{a^m}.\, \end{align}

Domain and range: y = f(x)

  • Domain, range
  • Domain: all x's (dependent var)
  • Range: all y (codomain, all corresponding values for each x in the domain)

rant

misc:

[edit] C

[edit] Automation (Tue)

Automation, Programmable logic controller

Omron Sysmac SYSMAC LINK C-20 (C-Series):

  • C-Series manual
  • Words: 16 bit
  • We use: Output: 01, 03, 05, 07, 09. Input: 00, 02, 04, 06, 08. (to make it clear for ourselves)
0000 LD  0007 (word 00, bit 07)
0001 OR  0009 
0002 OUT 0503

C-Series

  • Word/Bit Addresses: (6-4-1, p103): 2 bytes: address of word or flag. 1 byte: bit between 00-0F (0-15). 00 for word or flag data.... address of area + offset in BCD & bit ....
  • Data areas p33, also Memory Area Designations p88
  • Internal Relay (IR)
    • Words: 000 to 235. Bits: 00000 to 23515
    • Words: 00 to 18 (bits 00 to 07).
    • Used to control I/O points, other bits, timers, and counters, and to temporarily store data.
  • Special Relay (SR)
    • Words: 236 to 255. Bits: 23600 to 25507
    • Words: 18 (bits 08 to 15) and 19 (bits 00 to 07)
    • Contains system clocks, flags, control bits, and status information.
  • Auxiliary Relay (AR)
    • Words: AR 00 to AR 27. Bits: AR 00 to AR 2715
    • Contains flags and bits for special functions. Retains status during power failure.
  • Data Memory DM Read/write: DM 0000 to DM 0999
    • Read only: DM 1000 to DM 1999
    • Used for internal data storage and manipulation.
  • Holding Relay HR
    • Words: HR 00 to HR 99. Bits: HR 0000 to HR 9915
    • Words: HR0 to HR 9, bits: HR00 to HR915
    • Used to store data and to retain the data values when the power to the PC is turned off.
  • Timer/Counter (TC)
    • TC 000 to TC 511 (TC numbers used to access other information)
    • TC 00 to TC99
    • Used to define timers and counters, and to access completion flags, PV, and SV. In general, when used as a bit operand, a TC number accesses the completion flag for the timer or counter defined using the TC number. When used as a word operand, the TC number accesses the present value of the timer or counter.
  • Link Relay (LR)
    • Words: LR 00 to LR 63 Bits: LR 0000 to 6315
    • Available for use as work bits.
  • Temporary Relay (TR)
    • TR 00 to TR 07 (bits only)
    • TR00 to TR07 (bits only)
    • Used to temporarily store and retrieve execution conditions. These bits can only be used in the Load and Output instructions. Storing and retrieving execution conditions is necessary when programming certain types of branching ladder diagrams.
  • Program Memory (UM)
    • UM: Depends on Memory Unit used.
    • UM:1199 words
    • Contains the program executed by the CPU.

Standard instructions 3-1 p25:

  • AND, AND LD, AND NOT, CNT (counter), LD (load), LD NOT, OR, OR LD, OR NOT, OUT, TIM (timer), NOP, END, IL (interlock), ILC (IL clear), JMP, ..., SFT (shift register), KEEP, DIFU (differentiate up), DIFD, TIMH (high-speed timer), CMP (compare), MOV, MVN (move not), ADD (bcd add), SUB (bcd sub), STC (set carry), CLC (clear carry).

OR, AND (0001+0003).0002

[edit] Digital principles (Wed)

Digital

[edit] Renewables

Types of energy (one way of grouping):

[edit] Circuit theory (Thurs morn)

Circuit theory

Electronic colour code, Preferred number, Resistor.
Electronic colour code, Preferred number, Resistor.

[edit] Electronic concepts (Thurs arvo)

  • 3 labs
  • 1 project (similar to lab 3): build circuit, report
  • 2 tests

Electronics

Cathode ray oscilloscope (vs LCD oscilloscope)

dB:

op-amp

Op-amp symbol
Op-amp symbol
Pin assignment (Dual in-line package)
Pin assignment (Dual in-line package)

CMRR

[edit] Applied electricity

Applied electricity

Electricity's parameters:

Batteries

PD

misc

Fundamental sources of energy:

an electric current is an "orderly" movement (flow) of electrons.

misc

  • voltage/wattage of lightning ?
  • flux or magnetic lines of force
  • when relative motion exists between a conductor and a magnetic field, a voltage appears across the conductor and if the circuit is completed, a current is generated.
  • convention: rotate turbine CCW ? to give a nice sine wave?
  • Sine wave RMS value = Peak * 0.707. (Root Mean Square for AC)
  • Casio fx82
  • Electrolyte specific density in lead acid
  • Microhydro power
  • Solar cells ususally P-type material, but dubious exceptions are N-type (e.g. Sunpower)
  • emf (electromotive force
  • primary coil : secondary coil ratio
  • powerboards, fuses, etc, rated at 10A in au. 10A @ 240V = 2400W.
  • lighting: 1mm². 10A rating. 8A fuse.
  • power: 2.5mm². 10A rating. 16A fuse.
  • resistivity: R = ρL/A. ρ = Rho (1.72E-8 Ω for copper). L=Length, A=thickness.
  • Protronics tech corp, Millennium cell incorp. (ieee spectrum radio). 3 day special forces 6 pounds of batteries (=2.75kg). 12+ lithium throw away batteries for 72 hours ($1050US).
  • Mud brick (now 5 stars?)
  • Current distribution formula vs proportionality formula
  • : (same as. e.g. a ratio)
  • Pulsating DC, Filtered DC
  • Inductor or coil (pencil sharpener like device)
  • The current lags the voltage by 90deg in a pure [no resistance or capacitance] inductor.
  • Back emf, Back EMF vs inductive reactance (ohms), XL
  • Tau = C x R. Capacitance (F, Farads) x Resistance (Ohms)

[edit] CAD

[edit] Misc

[edit] Open courseware

open courseware

AND gate
AND gate
OR gate
OR gate
NOT gate
NOT gate

terms:

[edit] Physics